2CaO + 5C ==> 2CaC2 + CO2
This is a limiting reagent problem. I know that because amounts are given for BOTH of the reactants.
a. Convert 51.2g CaO to mols. mols = grams/molar mass.
b. Convert 50.0 g C to mols.
c. Using the coefficients in the balanced equation, convert mols CaO to mols CO2. Do the same to convert mols C to mols CO2.
d. It is likely that mols CO2 from c will NOT be the same which means one of them is not right; the correct answer in limiting reagent problems is ALWAYS the smaller value and the reagent producing that value is the limiting reagent.
e. Now convert mols CO2 to grams. g = mols x molar mass
determine the mass of CO2 produced when 51.2 g of CaO is reacted with 50.0 g of C according to the unbalanced equation CaO + C --------CaC2 =CO2
1 answer
1 answer